﻿@{
    Layout = null;
}



<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">

    <title>iScroll-5 DEMO: Pull to Refresh + Infinite Next Page load</title>

    <style type="text/css">
		* {
			-webkit-box-sizing: border-box;
			-moz-box-sizing: border-box;
			box-sizing: border-box;
		}

		html {
			-ms-touch-action: none;
		}

		body,ul,li {
			padding: 0;
			margin: 0;
			border: 0;
		}

		body {
			font-size: 12px;
			font-family: ubuntu, helvetica, arial;
			overflow: hidden; /* this is important to prevent the whole page to bounce */
		}

		#header {
			position: absolute;
			z-index: 2;
			top: 0;
			left: 0;
			width: 100%;
			height: 45px;
			line-height: 45px;
			background: #CD235C;
			padding: 0;
			color: #eee;
			font-size: 20px;
			text-align: center;
			font-weight: bold;
		}

		#footer {
			position: absolute;
			z-index: 2;
			bottom: 0;
			left: 0;
			width: 100%;
			height: 48px;
			background: #444;
			padding: 0;
			border-top: 1px solid #444;
		}

		#wrapper {
			position: absolute;
			z-index: 1;
			top: 45px;
			bottom: 48px;
			left:9999px; /* Not a must - can be 0 - but it makes the appearance of the content a bit nicer */
			width: 100%;
			background: #ccc;
			overflow: hidden;
		}

		#scroller {
			position: absolute;
			z-index: 1;
			-webkit-tap-highlight-color: rgba(0,0,0,0);
			width: 100%;
			-webkit-transform: translateZ(0);
			-moz-transform: translateZ(0);
			-ms-transform: translateZ(0);
			-o-transform: translateZ(0);
			transform: translateZ(0);
			-webkit-touch-callout: none;
			-webkit-user-select: none;
			-moz-user-select: none;
			-ms-user-select: none;
			user-select: none;
			-webkit-text-size-adjust: none;
			-moz-text-size-adjust: none;
			-ms-text-size-adjust: none;
			-o-text-size-adjust: none;
			text-size-adjust: none;
		}

		#scroller ul {
			list-style: none;
			padding: 0;
			margin: 0;
			width: 100%;
			text-align: left;
		}

		#scroller li {
			padding: 0 10px;
			height: 80px;
			line-height: 80px;
			border-bottom: 1px solid #ccc;
			border-top: 1px solid #fff;
			background-color: #fafafa;
			font-size: 14px;
		}

		.pullDownLabel, .pullUpLabel {color:#999}
		.pullDown, .pullUp {background:#fff;height:40px;line-height:40px;font-weight:bold;font-size:0.8em;color:#888}
		.pullDown .pullDownIcon, .pullUp .pullUpIcon {display:block;float:left;opacity:0.4;width:40px;height:40px;background:url(/Content/images/iscroll/pull_to_refresh.png) 0 0 no-repeat;-webkit-background-size:40px 80px;-ms-background-size:40px 80px; background-size:40px 80px;-webkit-transition-property:-webkit-transform;-ms-transition-property:-webkit-transform;-webkit-transition-duration:250ms;-ms-transition-duration:250ms}
		.pullDown .pullDownIcon {-webkit-transform:rotate(0deg) translateZ(0);-ms-transform:rotate(0deg) translateZ(0)}
		.pullUp .pullUpIcon  {-webkit-transform:rotate(-180deg) translateZ(0);-ms-transform:rotate(-180deg) translateZ(0)}
		.pullDown.flip .pullDownIcon {-webkit-transform:rotate(-180deg) translateZ(0);-ms-transform:rotate(-180deg) translateZ(0)}
		.pullUp.flip .pullUpIcon {-webkit-transform:rotate(0deg) translateZ(0);-ms-transform:rotate(0deg) translateZ(0)}
		.pullDown.loading .pullDownIcon, .pullUp.loading .pullUpIcon {background-position:0 100%;-webkit-transform:rotate(0deg) translateZ(0);-ms-transform:rotate(0deg) translateZ(0);-webkit-transition-duration:0ms;-ms-transition-duration:0ms;-webkit-animation-name:loading;-ms-animation-name:loading;-webkit-animation-duration:1s;-ms-animation-duration:1s;-webkit-animation-iteration-count:infinite;-ms-animation-iteration-count:infinite;-webkit-animation-timing-function:linear;-ms-animation-timing-function:linear}

		@@-webkit-keyframes loading {
			from {-webkit-transform:rotate(0deg) translateZ(0)}
			to {-webkit-transform:rotate(360deg) translateZ(0)}
		}
		@@-ms-keyframes loading {
			from {-ms-transform:rotate(0deg) translateZ(0)}
			to {-ms-transform:rotate(360deg) translateZ(0)}
		}


    </style>
</head>
<body onload="loaded()">
    <div id="header">iScroll</div>
    <div id="wrapper">
        <div id="scroller">
            <div class="pullDown">
                <span class="pullDownIcon">&nbsp;</span>
                <span class="pullDownLabel">Pull down to refresh...</span>
            </div>
            <ul></ul>
            <div class="pullUp"></div>
        </div>
    </div>
    <div id="footer"></div>


    <script src="~/Content/js/jquery/jquery-1.12.1.min.js"></script>
    <script src="~/Content/js/iscroll/iscroll-probe.js"></script>

    <script type="text/javascript">

        var items_per_page = 10;
        var scroll_in_progress = false;
        var myScroll;

        load_content = function (refresh, next_page) {

            // This is a DEMO function which generates DEMO content into the scroller.
            // Here you should place your AJAX request to fetch the relevant content (e.g. $.post(...))

            console.log(refresh, next_page);
            setTimeout(function () { // This immitates the CALLBACK of your AJAX function
                if (!refresh) {
                    // Loading the initial content
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row initial content</li>');
                } else if (refresh && !next_page) {
                    // Refreshing the content
                    $('#wrapper > #scroller > ul').html('');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row Refreshed</li>');
                } else if (refresh && next_page) {
                    // Loading the next-page content and refreshing
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                    $('#wrapper > #scroller > ul').append('<li>Pretty row X</li>');
                }

                if (refresh) {

                    myScroll.refresh();
                    pullActionCallback();

                } else {

                    if (myScroll) {
                        myScroll.destroy();
                        $(myScroll.scroller).attr('style', ''); // Required since the styles applied by IScroll might conflict with transitions of parent layers.
                        myScroll = null;
                    }
                    trigger_myScroll();

                }
            }, 1000);

        };

        function pullDownAction() {
            load_content('refresh');
            $('#wrapper > #scroller > ul').data('page', 1);

            // Since "topOffset" is not supported with iscroll-5
            $('#wrapper > .scroller').css({ top: 0 });

        }
        function pullUpAction(callback) {
            if ($('#wrapper > #scroller > ul').data('page')) {
                var next_page = parseInt($('#wrapper > #scroller > ul').data('page'), 10) + 1;
            } else {
                var next_page = 2;
            }
            load_content('refresh', next_page);
            $('#wrapper > #scroller > ul').data('page', next_page);

            if (callback) {
                callback();
            }
        }
        function pullActionCallback() {
            if (pullDownEl && pullDownEl.className.match('loading')) {

                pullDownEl.className = 'pullDown';
                pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh';

                myScroll.scrollTo(0, parseInt(pullUpOffset) * (-1), 200);

            } else if (pullUpEl && pullUpEl.className.match('loading')) {

                $('.pullUp').removeClass('loading').html('');

            }
        }

        var pullActionDetect = {
            count: 0,
            limit: 10,
            check: function (count) {
                if (count) {
                    pullActionDetect.count = 0;
                }
                // Detects whether the momentum has stopped, and if it has reached the end - 200px of the scroller - it trigger the pullUpAction
                setTimeout(function () {
                    if (myScroll.y <= (myScroll.maxScrollY + 200) && pullUpEl && !pullUpEl.className.match('loading')) {
                        $('.pullUp').addClass('loading').html('<span class="pullUpIcon">&nbsp;</span><span class="pullUpLabel">Loading...</span>');
                        pullUpAction();
                    } else if (pullActionDetect.count < pullActionDetect.limit) {
                        pullActionDetect.check();
                        pullActionDetect.count++;
                    }
                }, 200);
            }
        }

        function trigger_myScroll(offset) {
            pullDownEl = document.querySelector('#wrapper .pullDown');
            if (pullDownEl) {
                pullDownOffset = pullDownEl.offsetHeight;
            } else {
                pullDownOffset = 0;
            }
            pullUpEl = document.querySelector('#wrapper .pullUp');
            if (pullUpEl) {
                pullUpOffset = pullUpEl.offsetHeight;
            } else {
                pullUpOffset = 0;
            }

            if ($('#wrapper ul > li').length < items_per_page) {
                // If we have only 1 page of result - we hide the pullup and pulldown indicators.
                $('#wrapper .pullDown').hide();
                $('#wrapper .pullUp span').hide();
                offset = 0;
            } else if (!offset) {
                // If we have more than 1 page of results and offset is not manually defined - we set it to be the pullUpOffset.
                offset = pullUpOffset;
            }

            myScroll = new IScroll('#wrapper', {
                probeType: 1, tap: true, click: false, preventDefaultException: { tagName: /.*/ }, mouseWheel: true, scrollbars: true, fadeScrollbars: true, interactiveScrollbars: false, keyBindings: false,
                deceleration: 0.0002,
                startY: (parseInt(offset) * (-1))
            });

            myScroll.on('scrollStart', function () {
                scroll_in_progress = true;
            });
            myScroll.on('scroll', function () {

                scroll_in_progress = true;

                if ($('#wrapper ul > li').length >= items_per_page) {
                    if (this.y >= 5 && pullDownEl && !pullDownEl.className.match('flip')) {
                        pullDownEl.className = 'pullDown flip';
                        pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Release to refresh';
                        this.minScrollY = 0;
                    } else if (this.y <= 5 && pullDownEl && pullDownEl.className.match('flip')) {
                        pullDownEl.className = 'pullDown';
                        pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh';
                        this.minScrollY = -pullDownOffset;
                    }

                    console.log(this.y);
                    pullActionDetect.check(0);

                }
            });
            myScroll.on('scrollEnd', function () {
                console.log('scroll ended');
                setTimeout(function () {
                    scroll_in_progress = false;
                }, 100);
                if ($('#wrapper ul > li').length >= items_per_page) {
                    if (pullDownEl && pullDownEl.className.match('flip')) {
                        pullDownEl.className = 'pullDown loading';
                        pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Loading...';
                        pullDownAction();
                    }
                    // We let the momentum scroll finish, and if reached the end - loading the next page
                    pullActionDetect.check(0);
                }
            });

            // In order to prevent seeing the "pull down to refresh" before the iScoll is trigger - the wrapper is located at left:-9999px and returned to left:0 after the iScoll is initiated
            setTimeout(function () {
                $('#wrapper').css({ left: 0 });
            }, 100);
        }

        function loaded() {

            load_content();

        }

        document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false);

    </script>
</body>
</html>
